170201-N-MM501-0271 ARABIAN GULF (Feb. 1, 2017) Sailors assigned to the Royal Australian Navy Anzac-class frigate HMAS Arunta (FFH 151) don protective gear while taking part in a damage control drill during Exercise Unified Trident in the Arabian Gulf. Unified Trident is a multilateral exercise with the Royal Navy, Royal Australian Navy and French Marine Nationale to enhance mutual capabilities, improve tactical proficiency and strengthen partnerships in ensuring the free flow of commerce and freedom of navigation within U.S. 5th Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class Shannon Burns/Released)